The present invention relates to methods of obtaining fertile putative sorghum x maize and/or maize x sorghum intergeneric hybrid plants and plants produced thereby. In certain aspects, fertile putative sorghum x maize intergeneric hybrid plants are produced by crossing a sorghum parent plant NOT comprising a sorghum recessive mutant iap allele with pollen from a maize parent plants comprising a recessive mutant endosperm allele such as waxy1 (wx1) and/or opaque-2 (o2). In further aspects, the invention provides methods for the production of fertile putative maize x sorghum intergeneric hybrid plants and plants produced thereby. Specifically, fertile putative maize x sorghum intergeneric hybrid plants are produced by crossing a maize parent plant as female and comprising a recessive mutant endosperm allele such as waxy1 (wx) and/or opaque-2 (o2), wherein the mutant alleles maybe expressed in the homozygous single or double recessive state with pollen from a sorghum parent plant. The invention also provides methods for the development of subsequent filial generations of the putative F1 sorghum x maize and/or maize x sorghum intergeneric hybrid plant and plants thereof. Methods of utilising sorghum x maize and/or maize x sorghum intergeneric hybrid plants, progeny and products obtained therefrom are also provided.La présente invention concerne des procédés dobtention de plantes hybrides intergénériques sorgho x maïs et/ou maïs x sorgho putatives fertiles et les plantes ainsi produites. Dans certains aspects, des plantes hybrides intergénériques sorgho x maïs putatives fertiles sont produites par croisement dune plante-mère de sorgho ne comprenant PAS dallèle mutant récessif de sorgho iap avec le pollen de plantes-mères de maïs comprenant un allèle dendosperme mutant récessif comme waxy1 (wx1) et/ou opaque-2 (o2). Dans dautres aspects, linvention concerne des procédés de production de plantes hybrides intergénériques maïs x sorgho putatives fertiles et les plantes ains
